ENS 42599

v t e ENS Event
14:08 May 23, 2006
Title	Lost Special Nuclear Material
Event Description	In Event Notification 42597 on May 22, 2006 Pilgrim Nuclear Power Station notified the NRC that during ongoing activities to remove non-fuel material from the Pilgrim Spent Fuel Pool it had been identified that an irradiated neutron detector containing a very small quantity (less than 0.003 grams) of special nuclear material is not in its expected location. Per the inventory sheets the neutron detector should have been enclosed in a 'dry tube' in the Spent Fuel Pool. Processing of the 'dry tube' for shipment identified that the neutron detector is not in its expected location. There were a total of twelve (12) 'dry tubes' that our records show enclosed neutron detectors. Four (4) of these 'dry tubes' have been processed and a second 'dry tube' in which no neutron detector was stored has been found. This irradiated neutron detector would have contained a very small quantity (less than 0.003 grams) of special nuclear material. This condition is being conservatively reported under 10CFR74.11. There is no evidence of theft or diversion. Investigation is continuing. The licensee notified the NRC Resident Inspector.

ENS 42599 +/-
Where
Pilgrim Massachusetts (NRC Region 1)
Reporting

10 CFR 74.11(a)
Time - Person (Reporting Time:+-3.72 h-0.155 days <br />-0.0221 weeks <br />-0.0051 months <br />)
Opened:	Richard Probasco 10:25 May 23, 2006
NRC Officer:	Jeff Rotton
Last Updated:	May 23, 2006
42599 - NRC Website Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 42599\u003C/a\u003E - \u003Ca href=\"/Pilgrim\" title=\"Pilgrim\"\u003EPilgrim\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELost Special Nuclear Material\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 42599 - Pilgrim\n","link":"","lat":41.942861111111114,"lon":-70.57673055555556,"icon":""}],"imageoverlays":null}
v • d • e

v t e Emergency Notification System
Pilgrim with 10 CFR 74.11(a)
WEEKMONTHYEAR2006-05-23T02:00:00 [Table view]
[ENS list for Pilgrim]

Navigation menu